Patents by Inventor Clifford T. Rubenstein

Clifford T. Rubenstein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Toilet training method
    Patent number: 5353449
    Abstract: A method for training a child to urinate in the toilet. A chromotrophic indicator is added to the toilet water to provide an aqueous chromotrophic indicator in the toilet bowl. The user urinates into the aqueous solution, thereby changing the indicator from a first coloration to a second coloration.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: October 11, 1994
    Assignee: Tinkle Magic, Inc.
    Inventors: Clifford T. Rubenstein, Sharon L. Harrell, James R. Hunt